Bow_Extreme 538 #1 Posted December 15, 2009 Could someone who has a B-80 tell me where the hour meter is wired to on their tractor? I know it's suppose to function only when the key is on. I like things original and I'm trying to finish this up. By the way, I had a bad voltage meter on the tractor. This is why my tractor would not even turn over or do anything. I jumped the terminals and it took right off. I replaced the meter with one I had sitting on the shelf that was good. Share this post Link to post Share on other sites
kajamo240 3 #2 Posted December 15, 2009 My B-80 doesn't have an hour meter.... I don't think... Just the voltmeter... Share this post Link to post Share on other sites
rickv1957 70 #3 Posted December 15, 2009 The hour meter is wired in to same circuit as ignition at switch,Rick Share this post Link to post Share on other sites
Bow_Extreme 538 #4 Posted December 15, 2009 So I'm assuming you mean the "I" terminal which is the same as the black wire feeding the coil. Share this post Link to post Share on other sites
KC9KAS 4,741 #5 Posted December 15, 2009 My B-80 & B-100 both have ammeters, and I think they are original :notworthy: Share this post Link to post Share on other sites
rickv1957 70 #6 Posted December 16, 2009 Bow,that is correct,Rick Share this post Link to post Share on other sites
Bow_Extreme 538 #7 Posted December 16, 2009 Thank you Rick!! :notworthy: Share this post Link to post Share on other sites
Save Old Iron 1,563 #8 Posted December 16, 2009 By the way, I had a bad voltage meter on the tractor. This is why my tractor would not even turn over or do anything. I jumped the terminals and it took right off. I replaced the meter with one I had sitting on the shelf that was good. Bow, this might be confusing to a few folks out there. A bad VOLTMETER is very unlikely to cause a no start problem with your tractor. And jumping the terminals of the VOLTMETER would effectively ground out the 12 volt system in your tractor - sparks, burned wires or blown fuses. A VOLTMETER is a device which reads a voltage source and consumes VERY LITTLE CURRENT from the 12 volt source. Only a few milliamps actually flows thru a VOLTMETER. An open AMPMETER on the other hand would prevent your battery from charging and cause a no start condition. Jumping an open AMPMETER (with appropriate gauge wiring) would correct the open circuit and allow the tractor to start. I mention this only so no one tries to jump the voltmeter in tractors equipped with voltmeters. This will certainly cause more problems than it solves. :notworthy: Share this post Link to post Share on other sites
Bow_Extreme 538 #9 Posted December 16, 2009 I disconnected the volt meter and jumped the two wires together. This would not cause an issue with sparks blown wires, etc. unless you grounded the circuit. I know exactly what the consequences are in doing that. Now, the volt meter is essential to the starting circuit in the B-80 (unless it's bypassed). If something in the volt meter fails as in my circumstance which was a bit bizarre the ignition may not be supplied with the proper volts to power the ignition switch. I was getting less than 8 volts at the switch. I replaced the volt meter with a good volt meter and now I get the full 12-13 volts at the ignition switch. I apologize for any confusion on this. I would not recommend working on wiring on anything unless you know a little bit about circuits and how they are affected by improper handling. I don't know as much as I would like to know about electronics but I've worked on circuits far more complex and detailed than this and honestly the circuit is not setup very well in this tractor but I was just following the wiring diagram. Share this post Link to post Share on other sites
Save Old Iron 1,563 #10 Posted December 16, 2009 I disconnected the volt meter and jumped the two wires together. Share this post Link to post Share on other sites
Bow_Extreme 538 #11 Posted December 16, 2009 To further the discussion for the purpose of closing this out, please take a look at the drawing of the circuit below: I apologize I was talking about an ammeter. :notworthy: Share this post Link to post Share on other sites
Save Old Iron 1,563 #12 Posted December 17, 2009 I knew we would get on the same page. :notworthy: Share this post Link to post Share on other sites